CAJ | 학술논문

在往复式无油润滑压缩机装置上,试验研究了普通填充聚四氟乙烯(PTFE)、30%碳纤维增强FITE和C/C+PTFE三种不同材料填料密封环的摩擦力、摩擦功率和摩擦温度.结果表明,普通填充PTFE材料的摩擦力受活塞平均滑行速度的影响最大,其摩擦功率和摩擦温度也最大.虽然C/C+PTFE的摩擦功率略高于30%碳纤维增强PTFE,但其摩擦温度比30%碳纤维增强PTFE低.由于C/C+PTFE具有非常良好的力学性能和较好摩擦特性,它有望成为高压、高速工作条件下的密封环材料.
재왕복식무유윤활압축궤장치상,시험연구료보통전충취사불을희(PTFE)、30%탄섬유증강FITE화C/C+PTFE삼충불동재료전료밀봉배적마찰력、마찰공솔화마찰온도.결과표명,보통전충PTFE재료적마찰력수활새평균활행속도적영향최대,기마찰공솔화마찰온도야최대.수연C/C+PTFE적마찰공솔략고우30%탄섬유증강PTFE,단기마찰온도비30%탄섬유증강PTFE저.유우C/C+PTFE구유비상량호적역학성능화교호마찰특성,타유망성위고압、고속공작조건하적밀봉배재료.
Triobological experiments are performed in a reciprocating oil-free compressor arrangement to investigate the friction force, power consumption and friction temperature of three materials of pressure packing seals. These rings are respectively made in common filled polytetrafluroethylene (Filled PTFE), PTFE filled with 30% carbon fiber (30% CF + PTFE), and carbon-carbon composites with PTFE infiltrated (C/C+PTFE). Tests are performed at mean piston speed of 0.4, 0.8, 1.2, 1.6, 2.0 m/s and under a sealing pressure of 0.5, 1.0, 1.5, 2.0 MPa. The influence of mean sliding velocity on friction force of filled PTFE rings is greater than on that of the two other rings. And the power consumption and friction temperature of filled PTFE rings is the highest among the three materials. C/C+PTFE presents the lowest friction temperature, although its power consumption is slightly greater than 30% CF + PTFE. Owing to its good mechanical performances and tribologieal behaviors, C/C+PTFE is an optimum and promising material under conditions with sealing pressure up to 10 MPa and sliding velocity of more than 4.0 m/s.